Don't overwrite existing opensc.conf
Don't overwrite existing opensc.conf

fixes https://github.com/OpenSC/OpenSC/issues/1449
partially reverts c003f3825e5217cd3ef8272f4e8ebe47270a7847

LudovicRousseau/OpenSC,metsma/OpenSC,metsma/OpenSC,fabled/OpenSC,hongquan/OpenSC-main,dengert/OpenSC,AktivCo/OpenSC,frankmorgner/OpenSC,OpenSC/OpenSC,mouse07410/OpenSC,AktivCo/OpenSC,Jakuje/OpenSC,viktorTarasov/OpenSC-SM,fabled/OpenSC,fabled/OpenSC,Jakuje/OpenSC,philipWendland/OpenSC,frankmorgner/OpenSC,frankmorgner/OpenSC,OpenSC/OpenSC,dengert/OpenSC,LudovicRousseau/OpenSC,AktivCo/OpenSC,dengert/OpenSC,rickyepoderi/OpenSC,fabled/OpenSC,Jakuje/OpenSC,OpenSC/OpenSC,frankmorgner/OpenSC,philipWendland/OpenSC,hhonkanen/OpenSC,LudovicRousseau/OpenSC,metsma/OpenSC,viktorTarasov/OpenSC-SM,rickyepoderi/OpenSC,CardContact/OpenSC,viktorTarasov/OpenSC-SM,Jakuje/OpenSC,philipWendland/OpenSC,hhonkanen/OpenSC,hongquan/OpenSC-main,mouse07410/OpenSC,rickyepoderi/OpenSC,CardContact/OpenSC,CardContact/OpenSC,mouse07410/OpenSC,hhonkanen/OpenSC,hongquan/OpenSC-main